public class Stest {
    enum iden {
        Academic_committee,
        Moniter,
        Common_student;
    }
    static public void main(String[] arg){
        student s1=new student(0,"Zhangsan",89,20);
        student s2=new student(2021015,"Lisi",98,21);
        s1.setID(2021012);
        int id1=s1.getID();
        System.out.println("Identification\t\tNumber\tname\t\tgrade\tage");
        System.out.print(iden.Academic_committee);
        System.out.println(s1);
        System.out.print(iden.Moniter);
        System.out.println(s2);
    }
}
